/* 基础样式 */
body {
    font-family: 'Inter', system-ui, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8fafc;
    color: #1e293b;
}

/* 容器样式 */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #165DFF 0%, #0e4bdb 100%);
    color: white;
    padding: 1.5rem 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
}

header h1 i {
    margin-right: 0.75rem;
    font-size: 1.5em;
}

/* 菜单样式 */
.menu {
    background-color: white;
    margin: 2rem 0;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
}

.menu li {
    flex: 1 1 auto;
}

.menu a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.25rem 0.5rem;
    color: #334155;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    min-height: 4rem;
    text-align: center;
}

.menu a:hover {
    background-color: #f1f5f9;
    color: #165DFF;
}

.menu a i {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* 底部样式 */
footer {
    background-color: white;
    border-top: 1px solid #e2e8f0;
    padding: 1.5rem 0;
    margin-top: 2rem;
}

.footer-content {
    text-align: center;
    color: #64748b;
    font-size: 0.875rem;
}